York Millennium YCAJ150, Installation Operation & Maintenance, Page: 2 / 116

2 YORK INTERNATIONAL
TABLE OF CONTENTS
General Information .......................................................................................... 2
Typical Nomenclature ....................................................................................... 3
Unit Components ............................................................................................. 4
Compressor Components ................................................................................. 5
Operational Limitations ..................................................................................... 6
Physical Data .................................................................................................. 8
Dimensions ...................................................................................................... 10
Electrical Data ................................................................................................. 12
Installation ........................................................................................................ 16
Weight Distribution and Isolator Locations ........................................................ 18
Wiring Diagrams .............................................................................................. 20
Unit Controls and Operation ............................................................................. 31
Display Keys .................................................................................................... 34
Status Key ....................................................................................................... 39
Entry Key ......................................................................................................... 42
Program Key .................................................................................................... 43
Clock Keys ...................................................................................................... 47
Selection of Return or Leaving Chilled Liquid .................................................... 50
Setpoints Keys ................................................................................................ 51
System Safeties .............................................................................................. 61
Print Keys ........................................................................................................ 67
Unit On / Off Switch ......................................................................................... 74
Compressor Capacity Control ........................................................................... 80
System Startup Checklist ................................................................................ 81
Preventative Maintenance ................................................................................. 86
Options ............................................................................................................ 88
Troubleshooting Chart ...................................................................................... 106
Temperature Conversion Tables ........................................................................ 110
GENERAL INFORMATION
GENERAL DESCRIPTION
These packaged liquid chillers are completely self-
contained outdoor units shipped ready for final job instal-
lation requiring only liquid connections, power and con-
trol wiring. They are designed primarily for central sta-
tion air conditioning applications with normal installa-
tions being on roof-tops or on ground level beside the
building.
CODE STATUS
The units are designed in accordance with UL (200, 230,
460-3-60), N.E.C., ASHRAE/ANSI STANDARD 15, and
ASME Codes.